ABN and tax invoices
Your ABN and your customer's ABN on a clean PDF. GST-registered businesses get a TAX INVOICE heading when GST applies.
For Australian sole traders · iPhone
ABN invoices, GST and BAS. On your iPhone.
Send a proper invoice in a minute, keep expenses and GST credits in one place, and see your BAS figures before the quarter closes. No login. Your records stay on your phone.
- Free plan
- No account needed
- Records stay on device
InvBAS at a glance
- What it is
- An invoice and GST/BAS record-keeping app for iPhone
- Made for
- Australian sole traders and small businesses with an ABN
- Price today
- Free plan (up to 10 saved customers). Pro A$4.99/month or A$39.99/year
- Storage
- On your iPhone. No InvBAS account, no InvBAS cloud database
- Platform
- iPhone (iOS). App interface in English
- Does not
- Lodge BAS, file tax returns, take card payments or give tax advice
Everything a sole trader checks each quarter.
Money in, money out, GST and BAS. Nothing you have to learn accounting for.
Not registered for GST?
Invoices say “Not registered for GST. No GST has been charged.” so customers are never confused.
PayID and bank details
Payment details from your profile print on every invoice. Share the PDF straight from iOS.
Paid and unpaid
See what is open and what has been paid, and record payments when the money arrives.
Expenses and GST credits
Record supplier expenses with their GST so the BAS summary has both sides.
BAS summary
G1 total sales, 1A GST on sales and 1B GST credits for the quarter, calculated from your own entries.
Owner drawings
Money you take out is kept apart from business expenses, so the records stay clean.
Personal super notes
Track contribution amounts and notice status beside your business records.
Backup and import
Export a backup file whenever you like and import it on another iPhone.
An invoice your customer can pay today.
Create the invoice, preview the PDF, then send it by Mail, Messages, AirDrop or any app on your iPhone.
- Black-and-white layout that prints cleanly
- Business ABN and customer ABN
- GST line and TAX INVOICE heading when GST applies
- PayID or BSB and account number from your profile
TAX INVOICE
HARBOUR LANE STUDIO
ABN 12 345 678 901
Bill to Blue Gum Office Co.
INV-1027
Due 28 Oct 2026
DescriptionQtyAmount
Website design10$1,200.00
Brand assets1$350.00
Subtotal$1,550.00
GST (10%)$155.00
Total due$1,705.00
PayID: [email protected]
Simple screens. Real numbers.
Screenshots from the current app.
No login. Your records stay on your iPhone.
InvBAS stores invoices, customers, expenses and BAS summaries locally on your device. There is no InvBAS account and no InvBAS server holding your business records.
- On this iPhoneAll records are stored locally.
- No accountOpen the app and start. No email, no password.
- Your data, your controlExport a backup file whenever you want.
Free to start. Pro when you need it.
Current App Store prices in Australian dollars. Subscriptions are managed by Apple and can be cancelled any time in your Apple ID settings.
Free
A$0Invoices, PDFs, expenses, GST/BAS summary and backup. Up to 10 saved customers, forever.
Pro Monthly
A$4.99 / monthEverything in Free, plus unlimited saved customers.
Pro Yearly
A$39.99 / yearUnlimited saved customers, billed yearly.
Coming soon · not live yet
New plans are on the way
We are preparing a simpler line-up. Until it is released in the App Store, the prices above apply.
- Free forever with unlimited invoices and customers
- Pro A$4.99 / month, A$34.99 / year, or A$79.99 once for lifetime
- 14-day free trial of Pro
- Planned Pro features: quotes that turn into invoices, overdue reminders, custom logo
Planned prices and features may change. The price shown in the App Store before you confirm is the price you pay.
Guides for Australian sole traders.
Plain-English pages on invoicing, GST and BAS records, and what InvBAS can and cannot do.
Invoice app Australia
Invoice app for Australian sole traders
Create customer invoices, preview the PDF and share it from iPhone, without setting up a full accounting system.
Sole trader invoicesSole trader invoice app for Australia
Save customers, invoice a job in a minute, and see which invoices are still unpaid.
ABN invoicesABN invoice app for iPhone
Your ABN on every invoice, a TAX INVOICE heading when GST applies, and clear wording when it does not.
GST invoice PDFGST-aware invoice PDF app for iPhone
Your GST registration setting decides the wording: a GST line when you charge it, a clear no-GST note when you do not.
Not registered for GSTInvoice wording when not registered for GST
Many new sole traders are under the GST threshold. Their invoices should say so clearly.
BAS recordsBAS record keeping app for Australian sole traders
See G1 total sales, 1A GST on sales and 1B GST credits for the quarter, from your own records.
ExpensesiPhone expense tracker for Australian sole traders
Record expenses and their GST so the 1B GST credits figure in your BAS summary is complete.
Owner drawingsOwner drawings record keeping for sole traders
Money you take out is not a business expense. Keep it in its own list.
PayID invoicesPayID invoice app for Australian sole traders
PayID or BSB and account number on every invoice. Customers pay you directly, with no processing fees.
Record keepingSmall business record keeping app for Australia
The records a sole trader checks all year, in one app, without a heavy accounting suite.
Clear boundaries.
InvBAS keeps your records organised. It does not replace your accountant, BAS agent or the ATO's own systems.
Record keeping only
Summaries come from what you enter. Check them before you rely on them.
No tax advice
InvBAS does not provide tax, GST, BAS, legal or financial advice.
No ATO affiliation
InvBAS is not affiliated with or endorsed by the Australian Taxation Office.
No lodgement
InvBAS does not lodge BAS or tax returns. You lodge through the ATO or your agent.
Frequently asked questions
Short, factual answers about InvBAS.
What is InvBAS?
InvBAS is an iPhone app for Australian sole traders and small businesses. It creates ABN and GST-aware invoice PDFs, records expenses and GST credits, shows quarterly GST/BAS summaries (G1, 1A, 1B) from your own records, and keeps owner drawings and personal super notes. Records are stored locally on your iPhone with no account.
How much does InvBAS cost?
InvBAS is free to download. The free plan includes invoices, PDFs, expenses, GST/BAS summaries and backup, with up to 10 saved customers. InvBAS Pro costs A$4.99 per month or A$39.99 per year in the Australian App Store and unlocks unlimited saved customers. New plans are planned but not live yet.
Can InvBAS make an ABN invoice or tax invoice?
Yes. Invoice PDFs show your business ABN and, if entered, your customer's ABN. When your business is marked as GST registered and GST applies, the PDF is headed TAX INVOICE and shows the GST amount.
What if I am not registered for GST?
Mark your business as not registered for GST and invoice PDFs show “Not registered for GST. No GST has been charged.” InvBAS does not decide whether you must register for GST.
Does InvBAS lodge my BAS?
No. InvBAS shows a BAS summary (G1 total sales, 1A GST on sales, 1B GST credits) from your own records so you can check figures before you lodge through the ATO or your BAS agent. It does not lodge BAS or tax returns.
Where is my data stored?
On your iPhone. InvBAS does not require an account and does not run a cloud database for your invoice, expense or BAS records. You can export a backup file and import it on another device.
Can I send quotes or estimates?
Not yet. Quotes that convert into invoices are planned for InvBAS Pro. Today InvBAS creates invoices.
Is InvBAS available on Android or in Chinese?
InvBAS is currently an iPhone app with an English interface. This website is available in English, Traditional Chinese and Simplified Chinese.